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/*
*
* Copyright 2015 gRPC authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
#include "src/core/lib/iomgr/port.h"
#ifdef GRPC_POSIX_WAKEUP_FD
#include <stddef.h>
#include "src/core/lib/iomgr/wakeup_fd_cv.h"
#include "src/core/lib/iomgr/wakeup_fd_pipe.h"
#include "src/core/lib/iomgr/wakeup_fd_posix.h"
static const grpc_wakeup_fd_vtable *wakeup_fd_vtable = NULL;
int grpc_allow_specialized_wakeup_fd = 1;
int grpc_allow_pipe_wakeup_fd = 1;
int has_real_wakeup_fd = 1;
int cv_wakeup_fds_enabled = 0;
void grpc_wakeup_fd_global_init(void) {
if (grpc_allow_specialized_wakeup_fd &&
grpc_specialized_wakeup_fd_vtable.check_availability()) {
wakeup_fd_vtable = &grpc_specialized_wakeup_fd_vtable;
} else if (grpc_allow_pipe_wakeup_fd &&
grpc_pipe_wakeup_fd_vtable.check_availability()) {
wakeup_fd_vtable = &grpc_pipe_wakeup_fd_vtable;
} else {
has_real_wakeup_fd = 0;
}
}
void grpc_wakeup_fd_global_destroy(void) { wakeup_fd_vtable = NULL; }
int grpc_has_wakeup_fd(void) { return has_real_wakeup_fd; }
int grpc_cv_wakeup_fds_enabled(void) { return cv_wakeup_fds_enabled; }
void grpc_enable_cv_wakeup_fds(int enable) { cv_wakeup_fds_enabled = enable; }
grpc_error *grpc_wakeup_fd_init(grpc_wakeup_fd *fd_info) {
if (cv_wakeup_fds_enabled) {
return grpc_cv_wakeup_fd_vtable.init(fd_info);
}
return wakeup_fd_vtable->init(fd_info);
}
grpc_error *grpc_wakeup_fd_consume_wakeup(grpc_wakeup_fd *fd_info) {
if (cv_wakeup_fds_enabled) {
return grpc_cv_wakeup_fd_vtable.consume(fd_info);
}
return wakeup_fd_vtable->consume(fd_info);
}
grpc_error *grpc_wakeup_fd_wakeup(grpc_wakeup_fd *fd_info) {
if (cv_wakeup_fds_enabled) {
return grpc_cv_wakeup_fd_vtable.wakeup(fd_info);
}
return wakeup_fd_vtable->wakeup(fd_info);
}
void grpc_wakeup_fd_destroy(grpc_wakeup_fd *fd_info) {
if (cv_wakeup_fds_enabled) {
grpc_cv_wakeup_fd_vtable.destroy(fd_info);
} else {
wakeup_fd_vtable->destroy(fd_info);
}
}
#endif /* GRPC_POSIX_WAKEUP_FD */
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